State Key Laboratory of Multiphase Flow in Power Engineering & Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China.
School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710054, China.
Nat Commun. 2023 Jan 24;14(1):380. doi: 10.1038/s41467-023-36082-2.
The outstanding electrical and mechanical properties remain elusive on macroscopic carbon nanotube (CNT) films because of the difficult material process, which limits their wide practical applications. Herein, we report high-performance multifunctional MWCNT films that possess the specific electrical conductivity of metals as well as high strength. These MWCNT films were synthesized by a floating chemical vapor deposition method, purified at high temperature and treated with concentrated HCl, and then densified due to the developed chlorosulfonic acid-enhanced zipping effect. These large scalable films exhibit high electromagnetic interference shielding efficiency, high thermoelectric power factor, and high ampacity because of the densely packed crystalline structure of MWCNTs, which are promising for practical applications.
由于材料处理困难，宏观碳纳米管 (CNT) 薄膜仍难以具备优异的电学和力学性能，这限制了其广泛的实际应用。在此，我们报告了高性能多功能多壁碳纳米管 (MWCNT) 薄膜，其具有金属的特定电导率和高强度。这些 MWCNT 薄膜是通过浮区化学气相沉积法合成的，经过高温纯化和浓盐酸处理，然后由于开发的氯磺酸增强拉链效应而致密化。由于 MWCNTs 的致密结晶结构，这些大尺寸可扩展的薄膜表现出高电磁干扰屏蔽效率、高热电功率因子和高载流能力，有望实际应用。
